Titanium dioxide for high-light-resistance laminated paper and preparation method of titanium dioxide

The invention discloses titanium dioxide for high-light-resistance laminated paper and a preparation method thereof, the titanium dioxide comprises a titanium dioxide base material and a coating layer located on the surface of the titanium dioxide base material, and the coating layer comprises a silicon phosphate film layer, a zinc phosphate film layer and an aluminum oxide film layer from inside to outside in sequence. According to the titanium dioxide provided by the invention, three layers of envelopes including the silicon phosphate, the zinc phosphate and the aluminum oxide are adopted, so that the dispersity and the light resistance of the titanium dioxide can be remarkably improved, and the titanium dioxide is suitable for laminated paper. 本发明公开了一种高耐光层压纸用钛白粉及其制备方法，该钛白粉包括二氧化钛基材以及位于所述二氧化钛基材表面的包膜层，所述包膜层由内至外依次包括：磷酸硅膜层、磷酸锌膜层和氧化铝膜层。本申请提供的钛白粉，采用磷酸硅、磷酸锌和氧化铝三层包膜，可显著提高钛白粉的分散性和耐光性，适宜用于层压纸使用。